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Accuracy of predicted versus achieved aligner treatment outcome of a complex case using digital heatmaps

Phillip Goh
Phillip Goh
, 
Tony Weir
Tony Weir
, 
Elissa Freer
Elissa Freer
 oraz 
Brett Kerr
Brett Kerr
   | 13 lip 2021
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Article Category: research-article
Data publikacji: 13 lip 2021
Zakres stron: 109 - 120
DOI: https://doi.org/10.21307/aoj-2021-012
© 2021 Phillip Goh et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Pretreatment photographs.
Pretreatment photographs.

Figure 2.

Pretreatment OPG.
Pretreatment OPG.

Figure 3.

Pretreatment lateral cephalogram.
Pretreatment lateral cephalogram.

Figure 4.

Invisalign® predicted treatment outcome.
Invisalign® predicted treatment outcome.

Figure 5.

Invisalign® predicted outcome showing attachments.
Invisalign® predicted outcome showing attachments.

Figure 6.

Actual treatment outcome.
Actual treatment outcome.

Figure 7.

Final photographs 26.02.2020.
Final photographs 26.02.2020.

Figure 8.

Prefinishing OPG 30.10.19.
Prefinishing OPG 30.10.19.

Figure 9.

Prefinishing lat cephalogram 30.10.19.
Prefinishing lat cephalogram 30.10.19.

Figure 10.

Cephalometric superimposition (Bjork) pretreatment vs prefinish.
Cephalometric superimposition (Bjork) pretreatment vs prefinish.

Figure 11.

Auxiliary treatment during aligner treatment.
Auxiliary treatment during aligner treatment.

Figure 12.

Heat map definition: Scale is 1 mm either side of ideal, in 0.1 mm gradations. Deviations that are moving out of or away from the reference model are towards the red end of the spectrum. Deviations that are moving into the reference model are towards the blue end of the spectrum. All deviations greater than 1 mm are recorded as either solid red or solid blue.
Heat map definition: Scale is 1 mm either side of ideal, in 0.1 mm gradations. Deviations that are moving out of or away from the reference model are towards the red end of the spectrum. Deviations that are moving into the reference model are towards the blue end of the spectrum. All deviations greater than 1 mm are recorded as either solid red or solid blue.

Figure 13a.

Maxillary arch .stl superimpositions. Yellow – Initial .stl, Green – Final Outcome .stl and Heat Maps (Deviation is 1 mm either side of Nil, reference model is the Initial .stl).
Maxillary arch .stl superimpositions. Yellow – Initial .stl, Green – Final Outcome .stl and Heat Maps (Deviation is 1 mm either side of Nil, reference model is the Initial .stl).

Figure 13b.

Mandibular arch .stl superimpositions. Yellow – Initial .stl, Green – Final Outcome .stl and Heat Maps (scale is 1 mm, reference model is the Initial .stl).
Mandibular arch .stl superimpositions. Yellow – Initial .stl, Green – Final Outcome .stl and Heat Maps (scale is 1 mm, reference model is the Initial .stl).

Figure 14a.

Maxillary arch .stl superimpositions. Yellow – Predicted Outcome .stl, Green – Final Outcome .stl and Heat Maps (scale is 1 mm, reference model is the Predicted Outcome .stl).
Maxillary arch .stl superimpositions. Yellow – Predicted Outcome .stl, Green – Final Outcome .stl and Heat Maps (scale is 1 mm, reference model is the Predicted Outcome .stl).

Figure 14b.

Mandibular arch .stl superimpositions. Yellow – Predicted Outcome .stl, Green – Final Outcome .stl and Heat Maps (scale is 1 mm, reference model is the Predicted Outcome .stl).
Mandibular arch .stl superimpositions. Yellow – Predicted Outcome .stl, Green – Final Outcome .stl and Heat Maps (scale is 1 mm, reference model is the Predicted Outcome .stl).

Cephalometric measurements – initial and prefinishing.

Measurement Standard 18/8/2017 30/10/2019 Change
SKELETAL Maxilla SNA 82 ± 2° 72.6 72.8 0.2
A Point Convexity 3 ± 2 mm -2 -2.1 -0.1
NaVert – A point 1 mm -1.3 -1.2 0.1
Mandible SNB 80 ± 2° 72.6 73.0 0.4
Facial Angle 87 ± 3° 90.7 90.9 0.2
NaVert – Po -8 to -6 mm-2 to +4 mm 1.3 1.8 0.5
Basal Arch Relationship ANB 2 ± 2° 0 -0.2 -0.2
WITS F: 0mm -2.1 -1.9 0.2
Vertical Md Plane Angle 26 ± 4° 28.6 27.7 -0.9
LFH Angle 47 ± 4° 49.8 48.3 -1.5
Md Arc 26 ± 4° 35.2 37.6 2.4
Facial Axis Angle 90 ± 3° 83.2 83.7 0.5
Growth CVMI 1-6 6 6 0
DENTAL Upper Incisors UI to FH 110° 120.9 118.9 -2
UI to Pal Plane 110° 112 110.9 -1.1
UI to Na Vert 5 mm 6.8 7.6 0.8
Lower Incisors LI to Md Plane 92.5° 80.7 86.8 6.1
LI to Apo 1 ± 2 mm 0.2 2.4 2.2
LI to Apo 22 ± 4° 22.1 27.7 5.6
Interincisal UI to LI 130 ± 2° 129.7 126.6 -3.1
FACE DEPTH U Face G’-Sn 50% 46.6 45.8 -0.8
L Face Sn-Me’ 50% 53.4 54.2 0.8
U Lip Sn-Stom 33% 30.8 27.7 -3.1
L Lip Stom-Me’ 67% 69.2 72.3 3.1
PFH:AFH 59 to 63% 56.5 57.3 0.8
SOFT ISSUE L Lip – E Line -2 ± 2 mm -5.1 -4.0 1.1
SnVert – U Lip 1 mm -1.7 -0.9 0.8
SnVert – L Lip -1 mm -4.1 -2.0 2.1
SnVert – Po’ -3 mm -7.6 -8.0 -0.4

j.aoj-2021-012.tab.002

Date Stage
16/5/2018 Aligners inserted – 29 aligners in initial treatment
17/4/2019 32, 12, 22 not tracking at aligner 29 Attachments removed and scan for Additional Aligners
15/5/2019 Bonded new attachments. 26 aligners in Additional Aligner order Commence cross-elastics on left side at Aligner 1
18/7/2019 Aligner 6 12, 22 not tracking. Commence bootstrap elastics
16/10/2019 Aligner 12 31, 42 not tracking vertically so attachments removed to allow passive vertical settling, Commence powerarm mechanics for 32
30/10/2019 Prefinishing OPG and Lateral Ceph ordered
26/2/2020 Completed aligners; removed bonded attachments, bonded retainers
eISSN:
2207-7480
Język:
Angielski
Częstotliwość wydawania:
Volume Open
Dziedziny czasopisma:
Medicine, Basic Medical Science, other
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